var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');

var index = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//会话中间件
app.use(session({
  secret: 'secret',
  resave: true,
  saveUninitialized: false,
  cookie: {
    maxAge: 1000 * 60 * 10 //过期时间设置(单位毫秒)
  }
}));
//使用中间件把user设置成动态视图助手
app.use(function (req, res, next) {
  res.locals.user = req.session.user;
  var err = req.session.error;
  res.locals.message = '';
  if (err) res.locals.message = '<div style="margin-bottom: 20px;color:red;">' + err + '</div>';
  next();
})

app.use('/', index);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// catch 404 and forward to error handler
// app.use(function(req, res, next) {
//   next(createError(404));
// });

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

app.listen(3001, function() {
  console.log('listening 3000')
})
module.exports = app;
